kuhlman



(No Model.) 4 Sheets-Sheet 1.

D. D. KU'HLMAN.

AUTUMATIG GRAIN WBIGHING MACHINE. A No. 354,911. Patented Dec. 28, 1886.

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D. D. KUHLMAN.

AUTOMATIC GRAIN WBIGHINGMAGHINE. No. 354,911. PatentedDeo. 28, 1886.

N. PETERS. Phew-L (No Modem 4 Sheets-Sheet 3..

D. D. KUHLMAN.'

AUTOMATIC GRAIN WEIGHING MAGHINE.

N0. 354,911. Patented Deo. 28, 1886..

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(No Model.) y v 4 Sheets-Sheet 4.

D,l D. KUHLMAN.

AUTOMATIC GRAIN WBIGIIING MACHINE.

No. 354,911. PatntedDec. 28, 1886.

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M7/ewa?? ,Zankjialm UNITED STATES PATENT- Orricn.

DAVID D. KUHLMAN, OF ATOHISON, KANSAS, ASSIGNOR TO JOHN SEATON, OF SAME PLACE.

AUTOMATIC GRAIN-WEIGHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 354,911, dated December 28, 1886.

Application'iiled Augustv 5, 1886.

.To all whom it 'may concern;

Be it known that I, DAVID D. KUHLMAN, a citizen of the United States, residing at Atchison, in the county of Atchison and State of Kansas, have invented new and useful Improvements in vAutomatic Grain Weighing Machines, of which the following is a specification.

rIhis invention relates to improvements in 1o the automatic grain-weighing machines for which Letters Patent were issued to me October 16 and November 20, 1883, numbered, respectively, 286,934rv and 288,820.

The objects of my present invention are to r 5 render the machines more eiiicient in operation; to provide novel means for cutting off the low ofgrain to the grain-weighing bucket when the quantity therein overbalances the scalebeain and is discharged from the bucket 2o into a secondary movable hopper thereunder; to provide a guard or shield for the cut-off, whereby the pressure of grain is relieved therefrom, and it is thereby permitted to opcrate perfectly without being interfered with by the pressure of the flowing grain, to provide novel feed controlling valves for partially or nearly stopping the flow of grain as the quantity in the grain-weighing bucket is nearly sufficient to overbalance the sealebeam,

3o and to provide novel locking devices for holding the swinging partition in the grain-bucket at either side to wliich'it is swung by the dis,- charging grain.

The objects of my invention I accomplish by the combination of devices hereinafter described and claimed, reference being made to the accompanying drawings, in Which- Figure lis a perspective view of an automatic grain-weighing machine embodying my 4o invention; Fig. 2, a vertical central sectional view of the same; Fig. 3, a vertical sectional view taken on the line x a" of Fig. 2; Fig. 4, a detail perspective view of the devices for locking the swinging partition of the grain-bucket;

Fig. 5, a detail view of the feed-controlling valves; Fig. a detail view ci' the valve for cutting off the flow of grain to the bucket after the latter has overbalanced the scale-beam and discharged its contents. v

In order to enable those skilled in the art to make and use my invention, I will now de- Seral No. 210,088. (No model.)

scribe the same in detail, referring to the drawings, where- The numeral 1 indicates the stationary main frame Yof any construction suitable for the conditions required. The scale-beam 2 is bifurcated and mounted on knife-edge bearings 8 in the main frame, and connected at its eX- tremities by knife-edge bearings with the upper ends" of bars 4, secured to the sides of the 6o y grain-weighing bucket 5, and pivoted at their lower ends to links 6, which are pivoted at 7 to the main frame, thereby holding the bucket in proper position in its rising and falling movements. The grain-weighing bucket has a dischargemouth, 8, and a stationary partition near its receiving mouth, while directly under the partition is a rock-shaft, 9, journaled in the end walls of the bucket and extending there- 7o through atoueend,asat 10. To therock-shaft is rigidly attached the pendentoscillating partition 1l, which is adapted to rest at its lower edge against one ortheother side vof the discharge-mouth of the bucket. f 75 To arms rising from the main frame is fixed the chute 12 ofv a hopper, and in this chute is journaled, by a rockshaft, 18,' a curved cut-off valve, 14,while to the inclined walls 15 of the chute, beneath the cut-off valve, are secured 8o shieldplates 16, against one of which the free edge of the valve rests when in its closed position. The rock shaft at one end extends through the chute, and is provided with a crank-arm, 17, connected with a rod, 18, that extends to and is connected with the weighted forked frame 19, which is fulcrumed to the main frame at 20, and at its extremities is fulcrumed to a secondary grainreceiving hopper, 21, in such manner that when the grain-bucket 9o discharges into the hopper the latter descends, and, swinging the weighted forked frame 19, raises the rod 18, thereby moving the crank upward and causing the cut-off valve to close and seat by its free edge on one of the shield- 95 plates 16, or upon' one of the inclined walls 15 of the chute, for the purpose of cutting off the flow of `grain to the grain-bucket. The crankarm 17 of the rock-shaft 13 is slotted, and the rod 18 is adjustable in said slot for regulating Ioo the throw of the cutoff valve 14 and causing it to properly seat itself. In order that this FII swinging cut-off valve may not be subject to the pressure of the bulk of grain, I locate over it, in the chute, a guard-plate, 22, which extends horizontally partially across the chute, leaving aside opening, through which the grain passes.

In the contracted throat 23 of the chute, immediately under the shield-plate 16, are journaled two rock-shafts, 24, carrying plates 25, which constitute the feed-controlling valves to partially or nearly close the`flowof grain as the quantity thereof in the grain-bucket is sncient, or nearly so, to overbalance the scale-beam and discharge. The rock-shafts 24 at one end extend through the chutethroat way, and are each provided with a crank-arm, 26, having a stud or pin, 27, entering a slot in a cross-head, 28, provided at the inner end of a beam, 29, which is pivoted at 30 intermediate its ends, and carries an adjustable weight, 3l, between its pivot and its cross-head. The outer end of the beam is provided with a pivoted pendent link, 32, having a vertical slot, 33, through which extends one end of the scale beam 2, so that as the weight in the grainbucket overbalances thescale-beam the latter rises and immediately the weight 3l on the beam 29 depresses the cross-head 28, thereby throwing the cranks downward and rocking the shafts 24 to swing the valve-plates 25 upward to a horizontal position, or approximately so, across the contracted throatway of the chute. The edges ofthe plates 25 in their closed posit-ion may or may not meet; but if they meet, I provide their edges with recesses 34, so that even when the valve-plates are closed the flow of grain is not entirely cut off until the grain bucket discharges into the secondary hopper 2l, when the cnt-off valve 14 is closed, as before described, and the fiow of grain is completely cut off. This permits the machine to be used in connection with grinding-mills and provides for feeding the grain to the mill as fast as ground. The weight on the beam 29 serves to depress the yoked end thereof and raise the end of the scale-beam 2 to its exact level or balance through the medium of the slotted link 32, and, fnrther,when the scale-beam resumes its normal position after the grainbucket has discharged said beam strikes the lower end of the slot in the link 32, and thereby raises the cross head and opens the feed-controlling valves.

To lock the oscillating partit-ion to either side of the discharge-mouth ofthe bucket to which it may be swung, I provide the following devices: The ends of the bucket are each provided with two laterally-projecting studs, 35, on which are mounted between their ends the arms 36, which are weighted at their outer ends. One arm at its inner end is provided with a lug, 37, engaging a slot in the inner end of the other arm, and on the inner end of the arm having the lug is pivoted a link, 88, having a slot, 39, receiving a stud, 40, on a crankarm, 4l, attached to the lower edge of the oscillating partition in the grain-bucket. Vhen the grainbucket is elevated and receiving grain, the weighted ends of the arms 36 strike the upper arms, 42, causing them to Vforce the partition tightly to its seat, and holding the slotted links 38 in an inclined rigid position, so that through the crank-arm the partition is locked against one side of the discharge-mouth of the bucket, from which position it cannot move until the connected ends of the arms 36 are depressed, which only occurs when the bucket overbalances the scale-beam and descends, when the weighted ends of the arms strike the lower arms, 42, on the main frame, and thereby canse their inner ends to descend, releasing the slotted link and permitting the partition to swing to the opposite side of the discharge-month of the bucket, such swinging being effected by the weight of the grain as soon as the partition is released. To the throatway of the chute l2 is pivoted a swing ing feed-spout, 43, having a crank-arm, 44, engaged by the upper forked end, 45, of a lever, 46, rigidly secured to the projecting end of the rock-shaft carrying the oscillating partition, all in a manner similar to my aforesaid patents, so that when the partition is released by the locking devices and swings tothe opposite side of the discharge-mouth the rock-shaft is turned, thereby vibrating the lever and swinging the feed-spont,'so that it delivers the grain into that compartment of the bucket which is closed by the partition` In order to prevent thepartition from stopping in the center ofthe bucket, I provide the arm 40 at its outer end with a rigidly-attached inverted-V-shaped projection, 47, which, as the bucket rises, will strike either one or the other sides of a loosely V-shaped abutment, 48, which will guide the projection laterally, and thereby insure the proper closing of the partition.

Having thus described myinvention,what I claim is l. The combination, in a grain-weighing machine, of a grain-bucket, a chute for con veying the grain thereto, a swinging cntoff valvej ournaled at one longitudinal edge within a part of the chute and adapted to seat at its opposite edge, a crank-arm at one end of the valve, a frame fulcrumed on the main frame of the machine, a rising and falling secondary hopper pivoted to said fulcrumed frame beneath the bucket, and a connection between said fulcrumed frame and the crank-arm, substantially as described.

2. The combination, in a grain-weighing machine, of a main frame, a grain-bucket, a chute for conveying the grain thereto, aswinging eut-off` valve journaled in a part of the chute, a crank-arm at one end of the valve, a weighted forked frame fulcrumed between its ends on the main frame, a rising and falling secondary hopper fnlerumed on the inner eX- tremities of the forked frame beneath the grain-bucket, and a rod-connection between ICO the forked frame and the crank-arm of the valve, substantially as described.

3. The combination, in a grain-weighing machine, of a main frame, a grain-bucket, a chute for conveying the grain thereto, aswinging upwardly-opening cnt-off valve jonrnaled in a part of the chute and provided with a crank-arm, a guard-plate located above the valve and extending partially across the ch nte, a Weighted forked frame fnlcrumed between its ends on the main frame, a rising and falling secondary hopper fnlcrumed on the inner eX- tremities of the forked frame, and a rod-connection between the outer end of the forked frame and the crank-arm of the valve to swing the valve upward and open it when the outer end of the forked frame descends, substantially as described.

4. The combination, in a grain-weighing machine, of a grainbucket, a chute for conveying the grain thereto, a swinging feed-controlling valve located in a part of the chute for only partially cutting off the flow of grain, and a pivoted weighted beam connected at one end with the feed-controlling valve and at the other end with the scale-beam, substantially as described.

5. The combination, in a grain-weighing machine, of a grain-bucket, a chute for conveying the grain thereto, a swinging feed-con trolling valve located in a part of the chute for only partially cutting off the ilow of grain to the bucket, a crank-arm at one end of the valve, and a weighted pivoted beam having a slotted connection at one end with the crankarm, and at the other end loosely connected with the scale beam, substantially as described.

6. The combination, in a grain-weighing machine, of a grainbucket, a chute for conveying the grain thereto, two roek-shaftsjonrnaled in a part of the chute and each having a crankarm at one end, and a weighted pivoted beam having slotted connections at one end with the crank-arms, and loosely connected at theA other end with the scale-beam, substantially as described.

7. The combination, in a grain-weighing machine, of a grain-bucket, a chute for coni veying the grain thereto, feed controlling valves located in a part of the chute for only partially cutting off the dow of grain, and shield-plates arranged above the valves, sub stantially as described.

8. The combination, in a grain-weighing machine, of a grain-bucket, a chute for conveying the grain thereto, swinging valvesjournaled in a part of the chute for only partially euttingoffthe dow ofgrain, andinclinedshield plates secured to the chute above the Valves for protecting the latter from the pressure of the grain, substantially as described.

9. The combination, in a grainweighing machine, of a grainbueket, a chute for conveying the grain thereto, two feed-controlling valves pivoted in the chute to rise and fall for only partially cutting off the flow of grain to the grain-bucket, and acntoff valve pivoted in the chute above the two Jfeed-controlling valves for entirely cutting off the iiow of grain to the bucket, substantially as described.

10. The combination, in a grain-weighing machine, of a grain-bucket, a chute for conveying the grain thereto, feed controlling Valves for only partially cutting off the flow of grain to the bucket, a swinging cutoff valve located in the chute above the feed-controllin g valves for entirely cutting oi'i the `liow of grain, a rising and falling hopper beneath the bucket, and a connection between said hopper and the cut-off valve, substantially as described.

11. The combination, in a grain-weighing machine, of a'grain-bucket, a chute for conveying the grain thereto, rock shafts jonrnaled in a part of the chute and carrying feed-controlling valves for only partially cutting off the How of grain, crank-arms at one end ofthe shaft, a weighted pivoted beam connected at one end with said crank-arms and at the other end with the scale-beam, a swinging cut-oft' valve for entirely cutting off the liow of grain, a rising and falling hopper beneath the grainbncket, and a connection between said hopper and the cut-offvalve,substantially asdescribed.

12. The combination, with a rising and falling grain-bucket having a swinging partition provided with an arm at its lower end, of pivg oted locking-arms connected at one end, and a link connected with one of said arms and with the arm on the partition, substantially as described.

nected at their inner ends, and a slotted link,

loosely connected at one end with one arm and at its other end engaging the crank-arm on the partition, substantially as described.

In testimony whereof l adir my signature in presence of two witnesses.

DAVID D. KUHLllIAN. Witnesses: F. C. ANnnRsoN, J.. W. HANTHORN.

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